A water filter cartridge includes a sediment filter, a carbon filter, and a core having a tubular body with openings that allow water to flow through the core. The core defines an open central area, and the core supports the sediment filter and the carbon filter. A nanofiltration unit is arranged within the open central area of the core. The nanofiltration unit includes a tubular filter element defining a central volume, and a plurality of filaments arranged within the central volume.

A method for fractionating a sulfuric acid process stream having at least 1 wt % sulfuric acid, using a treatment system comprising three filtration assemblies each having membranes that are suitable to pass less than 10% salt in a standard test such that average passage of sulfuric acid from the first and third filtration assemblies is less than 30% and average passage of sulfuric acid from second filtration assembly is more than 70%. The system produces a fraction of the stream with a pH between 4 and 10, and a second fraction that contains at least 20 weight percent of sulfuric acid.

A method for fractionating a sulfuric acid process stream having at least 1 wt % sulfuric acid, using a treatment system comprising three filtration assemblies each having membranes that are suitable to pass less than 10% salt in a standard test such that average passage of sulfuric acid from the first and third filtration assemblies is less than 30% and average passage of sulfuric acid from second filtration assembly is more than 70%. The system produces a fraction of the stream with a pH between 4 and 10, and a second fraction that contains at least 20 weight percent of sulfuric acid.

Disclosed are a polysaccharide-peptide composite and a method of preparing the same. The polysaccharide-peptide composite is prepared from a bitter melon peptide (BMP) powder, gardenia fruit oil, a soybean polypeptide powder, an oat dietary fiber powder, a konjac powder, a corn silk, a mulberry leaf extract, a Poria cocos extract, a hawthorn extract, nutritional yeast and a pancreatin. The BMP powder is prepared by temperature-controlled hydrolysis, staged enzymatic hydrolysis and multiple filtrations. The gardenia fruit oil is prepared by staged enzymatic hydrolysis, multi-step centrifugation, filtration and stratification.

A desalination apparatus 12 (liquid treatment apparatus) includes a first water treatment unit 26 (liquid treatment unit) that includes a reverse osmosis membrane and in which a treated liquid is separated into a permeate that permeates the reverse osmosis membrane and a concentrate other than the permeate, a water recovery unit 28 (liquid recovery unit) that includes a reverse osmosis membrane and in which the concentrate is separated into a recovered liquid that permeates the reverse osmosis membrane and a waste liquid other than the recovered liquid, and a pressure increasing means that increases a liquid pressure of the concentrate, such that a state capable of separating into the recovered liquid and the waste liquid in the liquid recovery unit continues, and that directly feeds the concentrate from the liquid treatment unit to the liquid recovery unit.

The utility solution provides the reverse osmosis water purifier (Reverse Osmosis—RO), more specifically the RO water purifier using a module to assist in diagnosing and protecting the good status of the product to assist users to monitor the good status of the machine, assisting technicians in quickly diagnosing the location of faulty components on the system.

The disclosure relates to a method for separation and purification of N-acetyl-glucosamine, and belongs to the technical field of biological engineering. In the disclosure, a raw material solution containing N-acetyl-glucosamine is obtained by microbial fermentation or by hydrolyzing the chitin. The raw material solution is subjected to flocculation pretreatment, and continuous centrifugation or pressure filtration is performed to remove suspended solids such as microorganisms, proteins and polysaccharides to obtain clear liquid. Double-stage ion exchange chromatography is performed to remove impurities such as charged organic molecules and inorganic salts. Membrane concentration is performed to efficiently remove water to improve the concentration of the target product. Spray drying or further evaporation concentration and crystallization are performed. Finally drying is performed to obtain an N-acetyl-glucosamine crystal of which the purity is more than 99%.

This disclosure provides a system for coupling supercritical carbon dioxide cycle power generation and lithium extraction from brine. The system comprises an absorption heat pump unit, a supercritical carbon dioxide cycle power generation unit, and a unit for extracting lithium from brine. This system organically couples the exothermic characteristics of the supercritical carbon dioxide cycle system with the endothermic characteristics of the lithium extraction from brine system, and the waste heat is recycled in a cascade as the heat source in the lithium extraction from brine system, thereby effectively reducing the total energy consumption of power generation and lithium extraction and reduce the total equipment investment of the system, and significantly improving the efficiency of adsorption and lithium precipitation in the lithium extraction from brine system.

A liquid product manufacturing system according to the present invention includes: a pretreatment module for processing input material; an evaporation module for producing a concentrate by concentrating juice obtained by processing organisms contained in the input material in the pretreatment module; an extraction module for extracting a fragrance material from a slurry further obtained by processing the organisms in the pretreatment module; and a productization module for producing a liquid product by mixing the concentrate and the fragrance substance.

The present invention relates to a processed, solid soya protein product derived from soya bean meal (SBM) which protein product comprises 65-75% protein by weight of dry matter, has a protein to potassium weight ratio of at least about 70:1 and a dry matter content of at least about 90%, which product is substantially free of sodium, and wherein at least about 65% by weight of the indigestible oligosaccharide content of the SBM wherefrom the protein product is derived has been removed. The invention further relates to a leaching method for manufacture of the product as well as product obtainable by the method and use of the processed, solid soya protein product.